Snowplow



1' Feb. 4, 1930.

R. ROBERTSON SNOWPLOW Filed May '7. 1927 WITNESSES guwh 4 Sheets-Shet l INVENTOR ATTORNEYS Feb. 4, 1930. RQBERTSQN 1,746,167

SNOWPLOW Filed May 7, 1927 4 Sheets-Sheet 2 ATTORNEYS 4 Sheets-Sheet 4 R. ROBERTSON SNOWPLOW Filed May 7 1927 Feb. 4, 1930.

- WITNESSES Q Figure 2 is a top plan View of'the same;

Patented 4, 1

1 R CHARD 'noiznnrson, br' sALrNA; A sAs;

sno wrmw Application filed May 7, 1937. seein 59, 14) f f The invention relates to improvements in;

snow plows generally, and more, particularly tofa, typeof thelsaiiief adapted for use in connecti'on with traction engines and the like,

- Aniong'the numerous objects and advan;

tages oft-he invention, the same provides for a snow plow attachment for farm tractors,

and the like, such as the Fordsontypeof the .same, without in any Way lnddifying the;

' iostructure ofthe latter'for the purpose {suite able and 'eflective "mechanical refinement of mounting and connections wherebym far/i115 v tate the attachment of the snow plow n po:

snow rniovingoperation; effective means for delivering gathered snow at either one, side; or the other of the plow '01 at bothsides (if the. same as may" be' desired or. necessary;

we comparatively simple and efficient means for-c $5 gathering the snowandlconveying it} to the c said discharge, ineans; IneanSQOontrOlIedhy the operator from his seated pos t on on the tractor, for moving said delivery means, from v.

vpositions of side delivery of the gathered ineans by the operator. 31

ide deliver u on the release ofthe control I r 'W'ith thej-foregoingaiid others import-ant;

- ,objects and, advantages n view, as will he v i D hereinafter more readillv;understood, the in} vention resides in thefcer'tain new anduseful featuresofthe construet oii and arrangement of par-ts as Wlll be 'herelnaft er more fully de scribed, set'iorth iiiithe appended-claims and illustrated in ltheacc onlpanying drawings, in

Figure l is asi'deQeleVa-timioi? a convent onal form of structure showing a pract cal application of the inji'ent-ion thereto,

1112, 1 1; indijates generally;theipowerfplant of I tractor,- preferably a Fordson" typeof tractor. I:

sfslhqwjn, b, theiro tfyvhe l d ax c lrea'r 7 or drivingwheeled aXle, the housing iii-I- Dg an nterm ate 'porti of the eir i snow, tocpositions directly rearwardly of the] v tractor and parallel tofthe. sides thereof 015 the purpose of; Clearing the roadway to. pass -v ing trafiic'athne orhoth sides ofithema;

chine; and automatic means for returning the,

deliverylor discharge means-to position'sof;

7, and to efieetively Figure. 3; is a; front elevation;

Figure 4; is. a vertical Itrahsversei sectiont k n on the line f F g lre 1, I a

I F igure, 5 is a horizontal section through the I e j I head or shovel of the, snow plow attachn ent Figure (Sis a vertical section taken on the line 6'I6 of Figurefi, v q v r Figure 7 is aside, elevation; of the det whed draft; co'nnection'used for coupling th'egsnow j shovel draft frame tofthe rear or power axle: or axle housing, both-the said axleand hone.

ing being shown inlcross section;

lFigur e'fi8., is an enlarged sectional sl'llowing the latching dev1ce*f0r"securing the snow discharge means/spout in either of "the operative r mepe atir positions; and I I 9 is tSQOtlQll-lflktll on line 9&9 t Y Figure. Figure 5,.

,Referring th the dra vvings vvhe lfein sil nilar v V characters ofreferenee designate correspond-Q ing parts throughout the ,severaljviews thereg axle 6, efthe. operators seat located: directly. in rear of the power'pllant a. and fthefsteering wheel disposed directly: in rear ofthe power 3 Referr ng particularly to Figures 1,2 end coupling the, snow plow a tachmen t0 t e. ractor, e draft frameiSG provided and the same. consists of sidebars 85 lOend' 10 arranged at. epp'esite sides of'the power plant ct'withtheii" ffontlends project ing for a'Jdistanee beyond the forward axle d; 7

1n overlying'relation theretotand the front I end of the power plant 'd, and. co 1ineetin,g, the 9 cross bar "or draft heam,11. The draft b e 10 and 10 extendingalong the'oppositesides :Of thepowenplant a and'having their rear Y fen d's terminating adj acentte and in line With 1 3 the-rear le i -using clgeachlof thefreer en 'fl 0 barSIO and 0-;"are nga'gedin a sleeve po'r; e

tion'l2 of @Pert 13,o fa split Clamp engaged (over the ecornplemental end portiohsfi of lithe *axled, and-ere connected o t e other e ide I tachable part 14 of the isp'lit clamp by means 0 I planted; allfof the usual construetion arrangement ofthese'units orzpartsQ I of the bolts 15. To strengthen the oppositely projecting ends of the draft bar 11, suitable brace members 16 are connected to the, eX- tended outer ends thereof and extend rearwardly to points of connection with the side bars 10 and 10. If necessary, and as shown, these braces 16 are tobe bent to a shape sufficient to clear the ground wheels of the front axle b of the tractor.

Referring now and generally to all the several figures of the drawings, the snow plow proper consists essentially of a sheet metal head or shovel formed to provide a rearwardly and upwardly inclined blade portion 17, which merges into a substantiallycylindrical portion 18 forming a housing for a side delivery conveyor mechanism will be herein-' after fully described. The upper wall of the cylindrical housing curves first in a forwardly and downwardly direction and then merges into a forwardly andfupwardly directed inclined or curved portion 19 which portion 19 overlies a major portion'of the blade 17 and out of conjunction therewith to direct the snow as it is gathered into the housing 18/ The returning edge of the blade 17 is longer than the cylindrical housing 18, and has its opposite sideedges up-turned to form end walls or flanges 20, converging rearwardly and merging into the adjacent wall portions of the housing 18, as a .further means for di-.

I recting the gathered snow from the plate 17 and into the latter. preferably formed from a single sheet of metal, and the upper and lower wall por- I tions and of the cylindrical housing 18 are connected together by short strap members 21 being secured to the adjacentwall portions, at the opposite ends of the cylindrical housing portion '18, as by being riveted, as at 22, thereto. The head or shovel is to be strengthened by means of a desired number of metal straps or bars 23, being riveted as at.

24 to the outer side of the same, the outer of which'bars or straps 23 being disposed immediately adjacent the opposite side'edges, of

the head or shovel and the inner of the same in equi-distantly spacedrelation by these'out er bars or straps. The plow head or shovel thus provided is hingedly connected to the draft bar or beam 11 of the draft frame by means of hinge members or straps 25, fastened to reinforcing bars or straps23, engaged in the complemental hinge members or eyes 26 bolted or otherwise fastened to the draft bar or beam 11. 'It is desired that the returning edge of the shovel 17 be supported slightly abovea road, surface, when operated,

to avoid undue wear and'tear on the same, 'p

and to this end, suitable shoes 27 are provided for the purpose and are secured in position be-i neath the edge of the blade 17 and preferably to the ends of the several'reinforcin'g bands or straps 23.

For conveying thegathered snow to either This head or shovel isone side or the other of the plow head or shovel, after the snow has been received with- 31, whereby snow will readily pass from the housing 18 to and through the L 28. Mounted on the upper end of the spout L 28 is another spoutL 33 which, in turn," has its upper horizontally disposed open end connected to one end of a straight length or section of spout 34. The L33 is mounted on the upper end of the L 28 for turning movements, whereby the discharge spout 34 may be directedoutwardly at right angles to the path of travel of the plow, when discharging snow from the same, or rearwardly, into parallel relation with respect to the adjacent side of the tractor or plow head, when inoperative. To facilitate the turning of the upper L 33, on the lower L 28, a form of turntable is provided and the same consists. of an outturned flange 35 secured at the edge of the upper end of the L 28 to seat thereon, an outturned flange 36 carried at the lower end of the spout L 33 suitable U-shaped clips 37 being fitted over both flanges 35 and 36 to maintain the same in operative relation, and these clips are secured to the upper flange 36 in equi-distantly spaced relation around the same. The straight spout sect-ion 34 is secured at one end to the upper end of the L by means of the flanges 38 and 39, carried by the abutted ends of the L 33 and the .spout 34 respectively, and these flanges are secured together by means of metal clips 40 engaged over the same and suitably bolted in position for the purpose. r v

As conveying means, for delivering the gathered snow from the cylindrical housing 18, of the plowhead or shovel, a screw conveyor or impeller is mounted within the cylindrical housing 18 and has its shaft 41 journalled in bearings 42 formed with cross bars disposed diametrically of the opposite; open I ends of the-housing 18. The free end ofthe' shaft 41 is projected into the lower end of the spout L 28 and carries thereon'a'bevelled gear 43 arranged in 'mesh with 'a complemental bevelled gear '44 carried onthe lower end portion-of a screw impeller shaft 45 rising vertically" within the upwardlydirected ortion of the spout L 28, the lower end of the impeller shaft 45 being j ournalled in a bearing 46 carried by the lower wall portion of the L 28 and its upper end in a bearing formed .in a cross bar 47 secured diametr cally of the upper open end of the L 28.

To permit of the discharge of gathered e convenient to the position of the operator snow the'opposite sides-of the plow head or shovehit is to be understood that the arrangernentof the lower; and upper. "spout Us" 28 and 3.3"and the straight-spout sec-j ti'onl 34, together with theimpeller shaft 45 in the lower L28; will be duplicated at thet Z oppositeside ofthe plowhead or shovel, and that the impeller shaft 41 in t'he cylindrical peller shaft 4l will have z'rightland left hand,

housing 18 will be? geared to" the 'vertically disposed impellershaft 45 by means of a sec;

ond setof meshedbevelledgears 43 44 1 for the purposeH-In this instance, theim- I foldedin half and disposed to have its folded' end projecting outwardly from the cylin dricalhousing l8 toldirect the gatheredsnow.

to either side of the same and into the path- 7 ofth'e screw. sections'41 and 417', While its inner wall portions 48 are spaced apart to house between the same a sprocket wheel 49" mounted on the intermediate portion of the impeller shaft 41' through the medium of which sproc'ketwheel 49-power isfto be ap-- plied to the impeller shaft (from the power plant a of the structure. j a

i v th'e'inner end ofals haft 52 journalledin bear P I V c r V i l1 of'the' draft framei Theshaft 52 is driven byofapulley 54, keyed'to the .same,'

I Power is to .be transmitted to the sprocket wheel 49 by means of a-sprocket chain passing through a suitably slotted opening in the rear wall 10ft he Cylindrical housing 1 8, from a smaller sprocket wheelfil carried at ings '53, and, secured onthe cross bar or beam and is coupledby'ia belt 55 leadingto'and engaging apulle'y56 whicln in turn is driven ldirect' from the power plant ofthe's'tructure sesame devices' an'd mechanism for controllingothe powerhead and, the delivery and eachis to be operated from a position spout Whereby the same'are to be 'movedito, and iffr'om operativepos tions, .are provided Onset these mechanis n'sfis on the tractor; v p

lie-raising and lowering. of

gathering I positiomkand' cons sts of fE 'af pairi a of cables 57,]connec't6 i attheiriorwardlzends 1 to suitableeyes or "fastenings 58 secured in properly PaCed relation inwardly ot'sthe re turning Y edge" otj'the ulfzper v and forwardlyr curved portion 19-"of the plow head or shovel andg liaviiig their 1"e'arfw,a'rdly Id i-rected po-rs i tion's.passing"over-pulleys, 59, carried io nnth e upper ends of standards'GO rising from the 7 draft bar or 'beam llofthe draft frame. The rear ends of the cables 59 are fastened to a winding shaft6lwjourn-alled1 transversely of the tracton For imparting turning noveinents to the windingshaft 61 a worm wheel 62 ismounted on the end of thesamejandis disposed in neshzwith aworm 68 carried on an operating shaftv64' journalled in] proper position on the-tractor. A hand wheel 65 is mounted on the upper end of the operating shaft 64 which, when turnedin one direction p operates thetransverse shaft 61 through the meshing worm gears62 and 63, to effect the windingot'the cables 67 aroundthe shaft 61 I to cause the plow head or shovel-toswing upf- "wardly on its hinged connections '25 and 26V and out of contact with the road surface asis desirable when the plow head is being transported from one point of use to another. g By wind from the shaft 6l, and the plow-head turning th end wheel 65ina reversed direcj tion, the cables "57 will be-perrnittedto un-;

a a, or shovel to lower'to operativeiposition with its supported shoes 27 ,contactfwith-athe road surface. ,In the; raising move nento t the plow head or shovel a pa r of coil sprlngs 66"are -placed under compression onassoelated rod membersGT whereby, when the hand Wheel 65 is manipulated in .a directionfor the vunwindingof: the cables 57i1f0m the transversewinding shaft-61, the springs 66 I expand and actgto accelerate the initial lowering movement of theplow head or shovel,

to operativeposition. 'The springs66 are engaged on the rods 67 'whichlhaveqtheir' outer ends pivoted in suitable eye'members- 58 on the upper sideof the plowhead,"along-,=

side the eyes 58 f'and their inner endssl'idably engaged through openings formed in r the for the pur upper, endsiof the standard 360,

ose.

1T0 effect themoving ofthe discharge-spout 34 to and from sidedischarge position a cable '68 leads. from a a position convenient to the operator of the tractor and passes over afpulley 69- supported on the -lower-side,of the 3 spout section 34 from a reinforcing bandZO; secured thereon. .rearwardly, of. the transverse center otthe-salnejir'nd from thencetoalatch l a bolt 71 which .it'connects for simulta1'1eous' .7

actuationthereotwith the initial pullon thecable; for jthe moving of the discharge spout from 'its side discharge positiontolits 116311 wa'rdly directed travelling position; latchbolt? 1 ,is mounted in a bracket 72car-' .ried; at the lower side of one of the clipsvifif', and'is normally under 't'ension of a spring? to maintain it i i-latching connection .with i one ofits two complemental keeper openingsg 74and 75' formed int-he upper end of the stationaryv spout 'L 28 corresponding to the 7 positions of inoperativeness and operative} ness respectively of the movablelspout sec-l tions 33 and 34i To effect the automatic re- ,turn Jot the dischargespoutlto position foi' side discharge an arm 76fis 'secu-red at the center of the upperside of the .spoutL ;i.

beam 11.

to move the same to the position of side dis-' charge, the operator grasps the cable 68 and pulls on the same, which pulling action releases the latch bolt 71 from its engagement with the keeper opening 7 4 when the spring 77 immediately begins to contract and exerts a pull on the'arm 76 so that the spout 34 and its L" section 33' is quickly turned outward to such position. As soon as the spout 3% begins its turning movement to side discharge position, the operator may release his grip onthe cable 68, when the latch bolt 71 will be snapped by the spring 7 3 into keeper engaging position. Now, when the position of side d'scharge of the spout 3a is reached, the latch member 71 will automatically engage the keeper 75, and lock the spout against further or accidental movement. To turn the spout 34L back to its rearward position, the operator grasps the cable 68 and pulls the same to release the latch bolt 71 from the keeper 7 5, and-continues to pull steadily on the cable until the rearward turning'move ment of the spout 34 is completed, when by ceasing the pulling effort on the cable 68, the latch bolt 71 is snapped again into engagement with the keeper'M under the action of the spring 73. V v

To efiectively brace the delivery spout, in its entirety a brace member 80 is employed for the purpose, and the same is secured at.

one end to the upper end of the lower spout L 28 just below the turntable flanges and 36 and its other end to one of tllQgiIltQfmediate reinforcing bands or straps 23 on the piow head. To support the forward end of the draft frame and to remove its weight from the front steering axle b of the tractor, suitable ground castors or the like 81 are provided. the same'being journalled in the lower ends of spindles'82 depending from the'opposite ends of the cross bar or draft beam 11 of the frame, any suitable means being employed to secure the upper ends of'the spindles'82 securely in the opposite ends ,of the bar" or VJithout further description it is thought that the features and advantages of the invention will be readily apparent to those skilled in the art, and it will of course be understood that changes in the form, proportion and minor details of construction may be resorted to,

without departing from the spirit of the in vention or its scope as claimed.

Having thusfully describedthe invention what is claimed is:

1. In combinationwith a tr acton'a'snow plow carried" at the forward end of the tractor, means a'dapted to discharge gathered snow side-ways from said plow, means for actuating said snow discharge means to a" raising and lowering said plow, meansadapt edto discharge gathered snow sideways from said plow, means for actuating said plow discharge means to a rearwardly directed inoperative travelling position, means for securing said snow discharge means in either operative or inoperative position, and means for automatically returning said snow discharge: means to its operative positlonupon the release of said securing means. 7 c

' 3. In combination with a tractor, a draft frame carried by the tractor, a snow plow hingedly connected to theforward end of said draft frame, means operative from thetractor for raising and lowering said plow from and to its positionof operation, means carried by said snow plow and adapted to discharge gathered snow side-ways therefrom, meanscarrie'd by said plow for: conveying gathered snow to said discharge means, means 7 for actuating the said snow discharge means to a rearwardly directed inoperative traveldischarge means in either operative or inoperative position, and means for returning'said snow discharge means toits operative posiion upon itsrelease of said securing means.

LA snow plow attachment for tractors having a'front axle and a rear driving axle comprising a frame overlying the front axle of the tractor and having. draft connections with the rear axle only thereof,a snow gathering shovel having verticallyhinging con nections with the frontiedgeof said frame,

ling position, means for securingsaid snow" means for discharginggathered snowsideways of said shovel, means carriedby the shovel for conveying gathered snow towsaid'v discharging means, means controlled'by the operator of the tractor for raising said shovel when not in use, means'for moving said snow discharging means to a rearwardly directed inoperative travelling position, automatic means for returning said snow discharging V means to its normally operative position upon the release of said last mentioned means, and latchlng means for securing sald snow discharging means in either operativeor inope erative position.

5. A snow. plow attachment for tractors 7 having a front axle and a rear drivingaxle,

7 carried at the rear endof saidframe and encomprising a draft frame engaged over the" power plant of the tractor, draft connections gaging the rear axle only'of the tractor, a

snow gathering shovel having, vertically hinged connections with the front end of said frame, means'for discharging gathered snow sideways of said shovel, means carried by the shovel for conveying gathered snow to the said discharging means, means controlled by the operator of the tractor for raising said shovel when not in use, means for securing said snow discharge means in either operative I rearwardly directedposition when not in use,

' or inoperative position, means also controlled by the operator of the tractor for simultaneously releasing said securing means and moving saidsnow discharging means to a RICHARD ROBERTSON. 

